[DeTomaso] Remote oil filter setup
Thomas Tornblom
Thomas.Tornblom at hax.se
Wed May 6 07:42:14 EDT 2009
MikeLDrew at aol.com skrev:
> In a message dated 5/5/09 15 40 53, boyd411 at gmail.com writes:
>
>> I would think that a higher
>> volume of oil flow would be preferential. My logic may be flawed but the
>> more oil volume flowing through the system the less time it has to get
>> over
>> heated and the greater volume being pushed through the filtration system
>> the
>> more often the total volume is going to be cycled through the entire
>> system
>> and completely filtered.
>>
>>>> More is better to a point--but then it becomes too much. The problem
> with high-volume oil pumps is that they draw oil out of the oil pan faster
> than gravity lets it drain back down into the pan. The drain holes in the
> heads/block provide a finite drain-back capacity, which can easily be exceeded
> by a high-volume oil pump. Extended high-rpm running can literally pump
> all the oil to the top of the engine, flooding the valve covers, and then
> starving the pickup in the pan, so that the pressure then drops towards zero.
Not really. Any oil pump in a reasonably healthy motor has enough
capacity to force the by-pass valve in the pump to open at normal
cruising rpms, which makes the oil circulate in the pump. A high volume
pump achieves this quicker, at the cost of increased load on the cam and
heat buildup.
With a given oil pressure at the pump, the same amount of oil will flow
through the motor regardless if you have a normal or high-flow pump, so
there can be no more oil in the top of the engine.
With a high-pressure pump you will force more oil through the motor, and
you may end up with more oil in the top end.
If you install a remote filter and suffers from a pressure drop through
the lines, then a high-pressure pump can be use to overcome the drop so
that the pressure in the motor is still acceptable. A high-volume pump
will not achieve that.
Thomas
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